﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
  
        class SumUtils
        {
            //创建一个名为计算工具类 SumUtils，在类中分别定义：
            //计算两个整数相加、
            //两个小数相加、 
            //两个字符串相加、
            //以及从 1 到指定整数的和的方法。
            //在 Main 方法中分别调用定义好的方法。
            //根据题目要求，分别定义 3 个带两个参数的方法，以及一个带一个整型参数的方法，
            //四个方法名相同。

            public int Num1 { get; set; }
            public int Num2 { get; set; }
            public SumUtils(int num1, int num2)
            {
                this.Num1 = num1;
                this.Num2 = num2;
            }
            public void sum()
            {
                Console.WriteLine("这两个数相加和为{0}", (this.Num1 + this.Num2));
            }
            public double Num3 { get; set; }
            public double Num4 { get; set; }

            public SumUtils(double num3, double num4)
            {
                this.Num3 = num3;
                this.Num4 = num4;
            }
            public void sum1()
            {
                Console.WriteLine("这两个数相加和为{0}", (this.Num3 + this.Num4));
            }

            private string character1;

            private string character2;
            //public string character1 { get; set; }
            //public string character2 { get; set; }

            public SumUtils(string Character1, string Character2)
            {
                this.character1 = Character1;
                this.character2 = Character2;
            }
            public void sum2()
            {
                Console.WriteLine("{0}", (this.character1 + this.character2));
            }

            public int k { get; set; }

            public SumUtils(int m)
            {
                this.k = m;
            }

            public void accumulation()
            {
                int sum = 1;
                for (int i = 2; i <= k; i++)
                {
                    sum = sum + i;
                }
                Console.WriteLine("累加之和为：{0}", sum);
            }
        }
    }

